yesterday i noticed some runst on the inside of the frame. i think in the seat stay, is there a solution for that? getting it out the frame? or fixing it in the frame?
Something rattling around inside the 'blind' tubes on a brazed steel frame- top-tube, seatstays, fork blades- can be a good sign. It's usually a blob of brazing material, and indicates that the brazer fed enough of it into the joint for it to flow out the other end.
Might be an idea to gently 'probe' the rusty areas of the tubes/stays with a metal point- a sewing-needle would do. Obviously it's bad news if the needle goes through the tube anywhere, and good news if it doesn't.
I'm no authority on Gios, I don't know if there's a discrepancy between forks and frame, but IMO, aesthetically, if a Gios has lost that fork with the coins embedded in the crown, and gained a Gios fork without them, so much the better.